#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ /* cout<<abs(-5)<<endl; cout<<fabs(-1.5)<<endl; // cout<<min(2,5)<<endl; cout<<max(2.8,5.0)<<endl; cout<<max('a','c')<<endl; // cout<<max(max(7,5),9)<<endl; // cout<<round(4.586)<<endl; cout<<round(4.586*100)/100.0<<endl; cout<<ceil(4.3)<<endl; cout<<floor(4.2)<<endl; // cout<<pow(2.0,3)<<endl; cout<<sqrt(9)<<endl; cout<<sqrt(8)<<endl; cout<<sqrt(9.0)<<endl; // float a,b; cin>>a>>b; cout<<pow(a,2)<<'+'<<pow(b,2)<<endl; // faoat a,b,c,s; cin>>a>>b>>c; Q==Q*(Q-a)*(Q-b)*(Q-c); cout<<sqrt(Q*(Q-a)*(Q-b)*(Q-c))<<endl; // //绝对值函数 abs fabs; //最值函数 max min; //取整函数 round ceil floor; */ int n; cin>>n; for(int i=2;i<=sqrt(n);i++) { if(n%i==0) { cout<<"YES"<<endl; return 0; } } cout<<"NO"<<endl; return 0; }